Paper-bag machine



(No Model.) 3 Sheets-Sheet 2.

P. E. PORTER. PAPER BAG MAGHINE.

No. 398,278. Patented Feb. 19, 1889.

1L 4 1 1m q EL- WITNESSES: INvENToR;

BY CKM ATTORNEY.

(No Model.) 3 Sheets-Sheet 3. F. E. PORTER.

PAPER BAG MACHINE. No. 398,278. Patented Feb. 19, 1889.

Ma q 2 Ft wimmjj a CI ||||||m lllllmmi Emmilllllllllllmllllllll"W WITNESSES: INVENTOR:

. J JEOKM XW BY 0AM Aida ww- ATTORNEY.

NTTED STATES PATENT Trice.

FREDERICK E. PORTER, OF BALTIMORE, MARYLAND.

PAPER-BAG MACHINE.

SPECIFICATION forming part of Letters Patent No. 398,278, dated February 19, 1889.

Application filed June 19, 1888. Serial No. 277,537. (No model.)

To all whom. it may concern:

Be it known that I, FREDERICK E. PORTER, a citizen of the United States, residing at Baltimore, in the State of Maryland, have invented certain new and useful Improvements in PapenBag Machines, of which the following is a specification. I

My invention relates to certain improve ments in a machine for making paper bags, whereby I produce a more perfect machine, which performs the required functions with less liability to get out of order, and consequently fewer interruptions than other machines heretofore in use.

The invention is illustrated in the accompanying drawings, in which Figure 1 is a side elevation of the machine. Fig. 2 is a vertical longitudinal section, on a larger scale, of that part of the machine indicated by the line 2 2 in Fig Fig.3 is a top view of the machine. Fig. 4: is a cross-section 011 the line t 4. Figs. 5, 6, 7, and 8 are views of the tucker-plates. Fig. 9 is a view of the paper-tube breaker, being a cross-section of the machine on the line 9 of Fig. 3. Fig. 10 is a side view of the breaker, showing it as it appears from a direction transverse to that shown in Fig. 9. Figs. 11 and 12 are views of the bag-blank-holding rollers.

The frame or table of the machine is designated by the letter A. At one end is a shaft or roller, B, which carries a roll of paper, B, from which the bags are to be made. The paper is drawn from the roll and passes under and then up over a guide-roller, C, and then back, under, up, and over a second roller, G, and then down. The paste-receptacle a adjoins these guide-rollers, and a paste-applying wheel, a, revolves in the receptacle and bears againstthepaper,-B, and applies paste thereto. An elevated bridge, 7), extends crosswise of the table, and the paper passes from the top of the said roller 0 downward below the bridge and forward under it. An arm, b, is attached to the bridge and projects downward and supports a horizontal former-plate, c, which extends along and above the top of the table A. This machine is designed to make that style of paper bag which is pro duced from a tube whose two opposite edges are tucked inward bellows fashion, and

the bottom of the bag is closed by the end being folded back and pasted. The web or strip of paper, B, is formed into a tube by being folded about the said i'orlner plate c, the shape of which latter in cross-sction is shown in Fig. 4;.

The former-plate (3 consists of a thin broad upper and lower section. The said two sections are united or connected along their longitudinal centers by a narrow strip, 0, between them, thus forming a deep tuckgroove, 0 at each edge. I

At each side of the dow]1wardprojecting arm I) is a vertical stud or guide, (Z. The paper is drawn forward by the rollers D, and the central longitudinal positionof the paper is depressed by'the end of. the former-plate c, while the two edges of the paper are curled or bent upward as they pass between the said twostuds 0r guides d. This is preparatory to the formation of a paper tube.

I employ two tucker-plates, E, to tuck the edges of the paper tube in the side grooves, 0 of the former-plate, as shown in Fig. 4, in order thereby to impart the bellows shape to the bag. The tucker-plates here shown are an improvement over and a substitute for the wheels heretofore used. Each tucker-plateE has its front end rounded off, as at c, so that the two curled orbent-up edges 6 of the paper may without strain on the paper be tucked. into the grooves 0 The rounded front end, 6', of each tucker-plate has a thick edge, and a straight longitudinal edge extends therefrom to the opposite end, 6 This edge is gradually reduced in thickness until it is quite thin at the rear end. Each tucker-plate has attached to its rear end a top folder or presser-plate,f, which is secured by screws f to theback edge. These top presser-plates are in position to smooth and flatten down the pasted lapped edges of the paper tube. An adjustable edgeguide, g, is secured between the said top presser-plate, f, and the tucker-plate E. These guides g are shown in Figs. 7 and 8, and the paper tube in the machine passes along between these two guides. These guides g are adjustable independent of the top presserplates, f.

Each guide g has two lateral prongs, g, and the screws f which secure the top presserplate, f, pass down between the said two prongs, and thus the top presser-plate clamps the edge-guide and retains it wherever set.

Each of the tucker-plates E is jointed to two links or piv'oted arms, 71/,which are jointed to the table. The two tuckei plates are parallel, and are movable toward and from each other and preserve their parallelism. hen the tucker-plates are set in the position they are designed to have for the paper tube, they are held by four short arms, '1', each of which has one end hinged to the table, (see Fig. 3,) and is turned so as to lie flat on the table-top and have its free end against one of the pivoted links 72. \Vhen the paper passes beyond the top presser-plates, the tube for the formation of the bag has been completed.

A printing-roller or cam-shaped device, j, is on a shaft, j ,and serves to imprint on the paper tube at intervals a figure indicating the sizeof the bag. Each bag will bear on it an imprint of this figure. This printing-roller, however, has nothing to do with my present invention. The paper tube B passesbetween two drawing-rollers, D, which serve to draw it and the web or flat paper, B, from the roll B. These feed-rollers have the usual central groove, 3' which, however, I make narrower than it has heretofore been made, in order that the bearing parts of the rollers willh ave a good bite or grip on the paper tube and cover or include the inside tuck or tucked-in edge of the paper-tube, and thereby preventit from spreading.

A cutter-plate, 7t, extends across above the plane where the paper tube B will pass, and has a serrated edge. Two bag-holding rollers, F, one above the other, are employed, and the bite or space between said rollers (see Fig. 2) is a little higher than the plane of the cutter-plate It. At the moment these rollers grip the paper tube B the latter will thereby be drawn taut in a slightly upward inclined direction, and thus made to bear up against the said cutter-plate k. An inclined board, has position between the cutter-plate k and the holding-rollers F, and serves to receive and guide the end of the paper tube, which has been severed at the cutter-plate 7;.

\Vhile the paper tube is under tension and bearing up against the cutter-plate 7.1, as described, the revolving breaker G on the upturn of its revolution (see Fig. 2) cuts or severs the paper tube, that portion of the tube which is held by the rollers F forming one bag. The breaker G revolves in an inclined plane which is at right angles with the upwardly-inclined. plane which the paper tube has at the point where the cut is made. This construction and arrangement is a feature of importance. The shaft of the lower roller F carries at one end a bevel-pinion, I, (see Figs. 3, 9, and 10,) and the shaft Gr, which carries the breaker-bar G, has an inclined position in bearings G corresponding to that of the inclined guide-board it. (Seen in Fig. 2.) The breaker-shaft G also has a bevel-pinion, Z,

seem

which gears with the said pinion Z on the lower roller F.

The holding-rollers F are constructed and also mounted in an improved manner. Each roller has a longitudinal raised surface or grip-face, on. These raised faces on may be integral with the roller or may be formed on the roller by securing thereto strips 'or bars of metal. 3y this construction of the rollers the paper tube will be gripped during the revolution of the rollers only when the two raised faces m are coincident, as in Fig. 2, and durin g the remainder of their revolution the said rollers will turn free and with the least amount of friction. The mounting of these rollers is shown in Figs. 2, 11, and 12. The lower roller F is in fixed bearings; but the upper roller is in bearin n, which are vertically adjustable, and which also yield vertically under springpressure. Two screw-rods, 0, rise above the bearing a, and a bridge-bar, 0',connects them. A central red, at, is attached to the said hearing n and rises up between the two screw-rods and passes through the bridge-bars 0, on top of which a nut, a serves for adjustment to regulate the depth to which the upper roller may go.

It will be seen that the upper bearing and upper roller are suspended by the central rod, 02'. A pressure-bar, 1), extends across below the bridge-bar and is movable on the two rods 0, and its height is determined and adjusted by the nuts 1). A spiral. spring, 19 is between the pressure-bar and the bearing a of the top roller.

It will be seen that the nuts 1) serve to illerease or diminish the spring-pressure that may be exerted on the upper roller.

The mechanism for closing the end of the paper bag while the latter is held between the rollers F consists of the two closing-rollers q side by side, and the guide '2' above the first one of said closing-rollers and between it and a small upper feed roller, g, which latter is mounted on two pivoted arms, (1 The first closing-roller q is mounted in fixed bearings, but the second one is mounted in bearings which are pivoted at s, so as to allow the second roller to move toward or away from the first roller. A set-screw, 5-, passes through the said pi voted bearing and impinges against the fixed bearing, and thus is determined the minimum space between said two closing-rollers for the passage of the finished bag. A spring, 3 bears against the set-screw s and presses it toward the fixed bearing. The yieldi ng of the spring increases the said space.

The folder and paster plates are both carried by one and the same pivoted arm or yoke, IT. The paste-receptacle I has a roller, J, which has an intermittent movement by means of mechanism not here shown, as the same is no part of this invention. A rockshaft, II, is below the paste-receptacle and carries the arms H, to which the folder-plate 2. is rigidly fixed. In its descent, as shown at Fig. 2, the edge of the folder-plate tmakes a break or fold near the end of the paper tube which is to form the bag and forces the same in the form of a V down between the two closing-rollers q. At the same instant the paster-plate u applies paste on the tube end at one side of the said V-break. The paster-plate a is attached to a crossbar, u, the ends of which are pivoted (see a?) between the said two arms H. A lever, 10*, is attached to one of the paster-plat-e pivots a and projects up, (see Fig. 1,) and a stay-rod, a", is connected with the free end of the said lever. The effect of this construction will be understood by reference to l and 2. \Vhen the arms H are elevated, the pester-plate a is brought in contact with the paster-roller J and when the arms H are lowered the folderplate t forces the paper tube into a V, while at the same time the paster-plate a, which has swung on the pivots a in a direction away from the paste-roller, applies paste on the paper tube at one side of the V.

An arm, it, is attached to the rock-shaft H, and a rod, cc, connects said arm with a crank, y, on the shaft of one of the holdingrollers. The said connecting-rod a: has adjustable bearings on each end for taking up the wear where itconnects with the arm and crank.

The machine is driven by a pulley, l), on the shaft of the lower feed-roller.

It is deemed unnecessary to fully describe all the gearing and connections of the machine, as these may be arranged in an infinite number of ways.

Hating described my invention, I claim- 1. The combination of a paper-tube-former plate having tuck-grooves c at each edge, two tucker-plates, E, the front end of each of which is rounded off and thence to the rear end has a straight longitudinal edge which projects into one of said luck-grooves, and two links or pivoted arms jointed to the table and to each tucker-plate, whereby the tucker-plates move parallel.

i. In a paper-bag machine, the combination of a cutter-plate, 76, two rollers, F, the bite or space between which is higher than the plane of the said cutter-plate, an inclined board, it, between the cutter-plate and rollers, and a revolving breaker, G, which turns in an inclined plane at right angles with the plane of the said inclined board.

3. In a paper-bag machine, the combina tion of a breaker-bar and two holding-rollers, F, each provided with a longitudinal raised surface or grip-face, on, whereby the paper tube will be gripped during the revolution of the rollers only when the said two raised faces are coincident.

4. In a paper-bag machine, the combination of a breaker-bar, a folder, and pasterplate, and two holdingrollers, F, each provided with a longitudinal raised surface or grip-face, m, whereby the paper'tube will be gripped during the revolution of the rollers only while the breaker-bar and folder-plate are at work on the paper.

5. In a paper-bag machine, the combination of two holding-rollers, F, each provided with a longitudinal raised surface or gripface, in, a fixed bearing for the lower roller, a movable bearing for the upper roller, two screw-rods, 0, connected by a bridge-bar, o, a central rod, 01, attached to the upper bearing and passed through the said bridge-bar and having a nut, and a spring, 19 pressing upon the upper bearing, for the purpose set forth.

6. In a paper-bag machine, the combination of a folder-plate, t, and a paster-plate, 21, both carried by the same pivoted arms or yoke, ll, as set forth.

7. In a paper-bag machine, the combination of a paste-receptacle, I, roller J, a rockshaft, ll", arms or yoke ll, carried on the said rock-shaft, a folder-plate rigidly fixed to the said arms or yoke, and a paster'plate, u, on a cross-bar which is pivoted on the same arms or yoke.

. In testimony whereof I atlix my signature in the presence of two witnesses.

FREDERICK E. PORTER.

'Witnesses:

JOHN E. M earns, Cans. B. MANN. 

